The pair combined to secure the top spot as average times calculated from the best laps posted by each driver in the two 20 minute qualifying sessions set the grid.
Klark Quinn clocked the fourth fastest time in Q1 before V8 Supercars ace van Gisbergen chalked up a 1:26.637s to top the second session with the quickest time of the weekend.
The MARC GT BMW M6 GT3 of former DTM champion Bruno Spengler and Morgan Haber secured second spot.
Haber was third fastest in Q1 while Spengler posted a time good enough for seventh in the final qualifying session.
Factory Audi DTM star Molina topped the times in Q1 courtesy of his 1:26.67s effort.
The Tony Quinn/Daniel Gaunt Aston Martin was fifth ahead of the #2 Jamec Pem Audi of Garth Tander and Steve McLaughlan.
Alex Rullo replaces his father Peter, who piloted the car in both of Saturday's races.
The duo will start from seventh on the grid despite Percat suffering a spin in Q2.
Tekno Autosports' #59 McLaren piloted by Nathan Morcom and Grant Denyer was eighth, with the top 10 completed by Tony D'Alberto/Graeme Smyth (Maranello Motorsport Ferrari 458 GT3) and the SRM BMW M6 GT3 of Steven Richards and Max Twigg.
Mark Griffith will compete in today's endurance race after securing a Mercedes SLS AMG GT3 to replace his damaged AMG GT3 entry, which was ruled out of Saturday's two sprint races.
Griffith will partnered by V8 Utes champion Ryal Harris and will start from 21st on the grid.